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Finding the Fourth Proportional to 210,374.41, 290,339.54 and 129,799.87

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Solution

The fourth proportional to 210,374.41, 290,339.54 and 129,799.87 is: 179,137.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,374.41 : 290,339.54 = 129,799.87 : x
  2. Step 2: Convert to fraction form
    210,374.41/290,339.54 = 129,799.87/x
  3. Step 3: Cross multiply
    210,374.41x = 290,339.54 × 129,799.87
  4. Step 4: Simplify right side
    210,374.41x = 37,686,034,547.86
  5. Step 5: Solve for x
    x = 37,686,034,547.86/210,374.41
  6. Step 6: Final answer
    x = 179,137.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.